google scholar -- google as a gateway to things like pub med which is a, a lot of pub med is on google scholar r so i use google to get to data bases like pub med or nasa technical reports. there are a number of databases. i'm not using just sort of going in and typing in a keyword, i mean, because it's not a useful -- that's not a useful way to get trustworthy information. [laughter] sometimes i'll look something up like, say, those little silver balls on cupcakes. i wanted to know something. so i typed those in, and lo and behold, they have a name. drage. they have a name and, in fact, they're illegal in california. somebody sued saying the coating is silver, it's real silver, and it shouldn't be in the food, and now if you live in california, you can't get little balls for your cupcakes, they won't ship to california. so anyway, i go off on these tangents, and google takes me off on those tangents which then become footnotes which are the best part of my books anyway. >> host: what about wikipedia? >> guest: wikipedia is a good place to go when you're starting out and you just want